Design of High‐Sensitivity Cold‐Start Circuit for Wireless Energy Harvesting With Low Start‐Up Voltage

A high‐sensitivity and low start‐up voltage cold‐start circuit for wireless power harvesting is presented in this work. To improve conversion efficiency and reduce charge pump stages, a pipeline power supply uplifting clocking (PPSUC) driving scheme is proposed, which improves the conversion efficie...

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Bibliographic Details
Published in:International journal of circuit theory and applications 2024-11
Main Authors: Shi, Feng, Wang, Fang, Yang, Chen, Li, Xiaochao, Du, Yongqian
Format: Article
Language:English
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Summary:A high‐sensitivity and low start‐up voltage cold‐start circuit for wireless power harvesting is presented in this work. To improve conversion efficiency and reduce charge pump stages, a pipeline power supply uplifting clocking (PPSUC) driving scheme is proposed, which improves the conversion efficiency more than 45%. By adopting a two‐stage PPSUC driving Pelliconi charge pump, the proposed cold‐start circuit is designed and verified in a commercial 65‐nm MCOS process. Benefiting from the proposed PPSUC driving scheme, the cold‐start circuit demonstrates a low start‐up voltage of 170 mV and a high cold stat sensitivity of −32 dBm.
ISSN:0098-9886
1097-007X
DOI:10.1002/cta.4372